Figure 8
Experimental setup. A stimulus is a coloured text appearing on a monitor simultaneously with an auditory word through a headset. In a reaction-time task, subjects had to categorize each stimulus by pressing Arrow Left (True) or Arrow Right (False) on a keyboard according to a given categorization rule in each block. Please note, that the figure represents the first half of trials of each block, in the second half of trials of each block, the disappearance of the visual part of the stimulus (visual offset) occurred after a short delay of 150 ms after a button-press event (in the case of a correct response).
